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You should be using the 'High" DVD and not the 'Professional' I'm sure if you got it from the dealer then you have the right one.

The DVD/CD drives are a common failure, My NAVI01 died and I have since replaced it with a NAVI03.

You could try cleaning the lens, there is a fan in the NAV unit and it sucks loads of dust through the unit and alot gets deposited on the DVD/CD and lens itself, the disc in my NAVI01 had been in there 9 years! it was filthy!

Worth a try, I would keep an eye out for a replacement on ebay, I waited ages and got my NAVI03 for $250 which was pretty good!

Note that V32 is the latest released firmware from BMW.
BMW engineers stopped producing upgrade for E65/E66 after 03/2008.
There are many other versions V32.1 or V32.2 floating around on the net.
They are customized firmware, not the genuine BMW released firmware.

Alternatively, you can buy this firmware CD from the dealer.
This is the product number: P/N 01 59 0 141 891 index "y"

Step 3: Burn firmware (cue or bin) to a CD (or DVD)

You will need a single blank CD-R 700MB, not CD-RW.
Specified write speed 48x or 52x is not really important.
Verbatim and Memorex are reliable brands.
Other brands such as Maxell, Imation, TDK, or Sony are just fine.

New member here I have a 2006 750LI and trying to update my Navigation system. (hd750Li) I have followed your instruction to a T I have downloaded the cue and bin files to a cd-r and a dvd-r. But after following the instruction and get to the point of putting the firmware disk in. Once inserted all my screen say's is please insert cd/dvd? Kind of at a lost here could you possible tell me where I'm going wrong here?

Question, I have a 2007 - 750Li with E66 NAVI03 that needs the v32 software update. I found a 2013 Eastern High version map on e-Bay. Will I need to update to v32 in order to use the new map DVD disc? And if so, in order to make the v32 software update Disc, do I simply download both files and burn both to the disc and just put it in the Navigation DVD drive? Finally, if you know, will I need some type of access code for the Map DVD disc from e-Bay or do I simply get the disk and use it? I know it is allot of information I'm asking but I really do appreciate it.

Question, I have a 2007 - 750Li with E66 NAVI03 that needs the v32 software update. I found a 2013 Eastern High version map on e-Bay. Will I need to update to v32 in order to use the new map DVD disc? And if so, in order to make the v32 software update Disc, do I simply download both files and burn both to the disc and just put it in the Navigation DVD drive? Finally, if you know, will I need some type of access code for the Map DVD disc from e-Bay or do I simply get the disk and use it? I know it is allot of information I'm asking but I really do appreciate it.

Follow the instructions to know whether you need firmware update or not. Though update is optional. No, you don't need access code.